No CrossRef data available.
Article contents
DESCRIPTION OF PREPARATORY STAGES OF HELICONIA CHARITONIA, Linn.
Published online by Cambridge University Press: 31 May 2012
Extract
Egg—Cylindrical, one half higher than broad, flat at base, tapering very slightly from base to about three fourths the length, then conoidal, the top flattened and a little depressed; marked by 14 vertical ridges, straight, narrow, not very prominent, and extending from base to the middle of the cone ; below the cone are horizontal striæ, which with the ridges enclose long, rectangular spaces ; there are nine tiers of these, each space roundly excavated; above the base of the cone are similar spaces in one tier, but they are higher and more nearly square and more deeply excavated ; next these is a tier of seven cells, irregularly pentagonal; the flattened top is composed of three concentric rows of small spaces, the outer one largest, and this and the next formed of pentagons; the inner row is made of rhomboids with the micropyle in the centre ; color yellow. Duration of this stage 3 days.
- Type
- Articles
- Information
- Copyright
- Copyright © Entomological Society of Canada 1881
References
* In Part II of Dr. Weismann's Studies in the Theory of Descent, Lond. con. 188l, is an abstract of a paper by Dr. Fritz Müiller, on Brazilian butterflies, in which it is stated that “the pupæ of Heliconius when moving their posterior segments rapidly, as they do whenever they are disturbed, produce a very perceptible hissing. noise by the friction of these segments, this sound perhaps serving to terrify small foes.”